java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:29:17,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:29:17,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:29:17,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:29:17,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:29:17,542 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:29:17,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:29:17,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:29:17,543 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:29:17,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:29:17,544 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:29:17,544 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:29:17,545 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:29:17,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:29:17,545 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:29:17,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:29:17,546 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:29:17,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:29:17,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:29:17,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:29:17,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:29:17,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:29:17,547 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:29:17,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:29:17,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:29:17,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:29:17,548 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:29:17,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:29:17,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:29:17,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:29:17,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:29:17,549 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:29:17,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:29:17,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:29:17,550 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:29:17,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:29:17,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:29:17,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:29:17,596 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:29:17,596 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:29:17,597 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i [2019-09-09 05:29:17,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de1eb070/0e06fe74e4be44c2bb8e5e4273a34717/FLAG8930f0fcd [2019-09-09 05:29:18,099 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:29:18,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i [2019-09-09 05:29:18,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de1eb070/0e06fe74e4be44c2bb8e5e4273a34717/FLAG8930f0fcd [2019-09-09 05:29:18,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de1eb070/0e06fe74e4be44c2bb8e5e4273a34717 [2019-09-09 05:29:18,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:29:18,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:29:18,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:29:18,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:29:18,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:29:18,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ea378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18, skipping insertion in model container [2019-09-09 05:29:18,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,529 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:29:18,550 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:29:18,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:29:18,766 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:29:18,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:29:18,801 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:29:18,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18 WrapperNode [2019-09-09 05:29:18,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:29:18,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:29:18,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:29:18,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:29:18,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... [2019-09-09 05:29:18,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:29:18,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:29:18,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:29:18,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:29:18,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:29:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:29:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:29:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:29:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:29:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:29:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:29:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:29:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:29:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:29:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:29:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:29:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:29:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:29:19,213 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:29:19,213 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-09 05:29:19,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:29:19 BoogieIcfgContainer [2019-09-09 05:29:19,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:29:19,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:29:19,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:29:19,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:29:19,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:29:18" (1/3) ... [2019-09-09 05:29:19,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:29:19, skipping insertion in model container [2019-09-09 05:29:19,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:29:18" (2/3) ... [2019-09-09 05:29:19,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:29:19, skipping insertion in model container [2019-09-09 05:29:19,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:29:19" (3/3) ... [2019-09-09 05:29:19,223 INFO L109 eAbstractionObserver]: Analyzing ICFG array_assert_loop_dep.i [2019-09-09 05:29:19,233 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:29:19,249 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:29:19,286 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:29:19,335 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:29:19,335 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:29:19,336 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:29:19,336 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:29:19,336 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:29:19,336 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:29:19,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:29:19,337 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:29:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-09 05:29:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-09 05:29:19,366 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:29:19,367 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:29:19,369 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:29:19,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:29:19,375 INFO L82 PathProgramCache]: Analyzing trace with hash -423135907, now seen corresponding path program 1 times [2019-09-09 05:29:19,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:29:19,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:29:19,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:29:19,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:29:19,432 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:29:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:29:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:29:19,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:29:19,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:29:19,509 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:29:19,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:29:19,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:29:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:29:19,527 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-09 05:29:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:29:19,546 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-09 05:29:19,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:29:19,548 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-09 05:29:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:29:19,558 INFO L225 Difference]: With dead ends: 25 [2019-09-09 05:29:19,558 INFO L226 Difference]: Without dead ends: 20 [2019-09-09 05:29:19,560 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:29:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-09 05:29:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-09 05:29:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-09 05:29:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-09 05:29:19,603 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2019-09-09 05:29:19,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:29:19,603 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-09 05:29:19,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:29:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-09 05:29:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-09 05:29:19,605 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:29:19,605 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:29:19,606 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:29:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:29:19,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1453190697, now seen corresponding path program 1 times [2019-09-09 05:29:19,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:29:19,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:29:19,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:29:19,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:29:19,608 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:29:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:29:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:29:19,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:29:19,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:29:19,672 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:29:19,673 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:29:19,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:29:19,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:29:19,676 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-09-09 05:29:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:29:19,767 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-09-09 05:29:19,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:29:19,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-09-09 05:29:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:29:19,771 INFO L225 Difference]: With dead ends: 27 [2019-09-09 05:29:19,771 INFO L226 Difference]: Without dead ends: 27 [2019-09-09 05:29:19,772 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:29:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-09 05:29:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-09-09 05:29:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-09 05:29:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-09-09 05:29:19,787 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2019-09-09 05:29:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:29:19,788 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-09-09 05:29:19,788 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:29:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-09-09 05:29:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:29:19,791 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:29:19,791 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:29:19,793 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:29:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:29:19,794 INFO L82 PathProgramCache]: Analyzing trace with hash -769700427, now seen corresponding path program 1 times [2019-09-09 05:29:19,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:29:19,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:29:19,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:29:19,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:29:19,798 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:29:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:29:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:29:19,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:29:19,882 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:29:19,883 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-09 05:29:19,886 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [27], [42], [45], [47], [53], [54], [55], [57] [2019-09-09 05:29:19,932 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:29:19,932 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:29:19,996 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:29:19,998 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 17 variables. [2019-09-09 05:29:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:29:20,001 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:29:20,033 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:29:20,033 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:29:20,035 INFO L420 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2019-09-09 05:29:20,035 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:29:20,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:29:20,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-09 05:29:20,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:29:20,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:29:20,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:29:20,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:29:20,038 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-09-09 05:29:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:29:20,039 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:29:20,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:29:20,039 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-09 05:29:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:29:20,039 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:29:20,040 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:29:20,040 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:29:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:29:20,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:29:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:29:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:29:20,041 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-09 05:29:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:29:20,042 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:29:20,042 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:29:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:29:20,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:29:20,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:29:20 BoogieIcfgContainer [2019-09-09 05:29:20,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:29:20,050 INFO L168 Benchmark]: Toolchain (without parser) took 1537.58 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 87.1 MB in the beginning and 124.5 MB in the end (delta: -37.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2019-09-09 05:29:20,051 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory is still 105.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 05:29:20,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.25 ms. Allocated memory is still 134.7 MB. Free memory was 87.1 MB in the beginning and 77.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-09-09 05:29:20,053 INFO L168 Benchmark]: Boogie Preprocessor took 136.66 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 77.6 MB in the beginning and 177.2 MB in the end (delta: -99.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:29:20,054 INFO L168 Benchmark]: RCFGBuilder took 275.80 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 163.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:29:20,055 INFO L168 Benchmark]: TraceAbstraction took 831.78 ms. Allocated memory is still 200.3 MB. Free memory was 163.9 MB in the beginning and 124.5 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2019-09-09 05:29:20,059 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory is still 105.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.25 ms. Allocated memory is still 134.7 MB. Free memory was 87.1 MB in the beginning and 77.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.66 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 77.6 MB in the beginning and 177.2 MB in the end (delta: -99.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.80 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 163.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 831.78 ms. Allocated memory is still 200.3 MB. Free memory was 163.9 MB in the beginning and 124.5 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 4 SDslu, 13 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9464285714285714 AbsIntWeakeningRatio, 0.7142857142857143 AbsIntAvgWeakeningVarsNumRemoved, 0.42857142857142855 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...